My new pen ______. Who ______ have taken it?
The visiting minister expressed his satisfaction with the talk, ___ that he had enjoyed his stay here.
The missing boys were last seen ___ near the river.
If I ___ free tonight, I'll go to the cinema with you.
When I handed the report to John, he said that George was the person ___.
She can’t help___ the house because she’s busy making a cake.